Collectible Card Game Headquarters

So no matter if i check Vintage filter on while building my deck, the game always gives me a loss at the start of the gauntlet, meaning my deck is not Vintage legal. I checked it multiple times, made multiple changes, even set all lands as basics, but nothing helps. I'd really love to unlock Bloodbraid Elf...
Can anyone help me?

My decklist:
4 Birds of Paradise
4 Coiling Oracle
4 Kodama's Reach
4 Natural Order
4 Bribery
4 Summoning Trap
4 Platinum Angel
4 Craterhoof Behemoth
4 Artisan of Kozilek
4 Kozilek, Butcher of Truth
Ehh, nevermind, somehow after posting this the deck got accepted...
And now it rejects the deck again. What's wrong?

You do have at least 60 cards, right? (Since you didn't show your lands.)

The only other thing I can think of is that trying to run different challenges without exiting the game entirely first. There's a specific warning to do this for the puzzle challenge, but you've really got to do it for all of them.